Cast on 20 stitches
Row 1: *K2,P2* Rep to end of row
Row 2: *P2, K2* Rep to end of row
Every 4 rows move your stitches over 1 stitch,
So at the beginning of the 5th row P1, K2, P2, and repeating until the end of the row.
Repeating this until your scarf is as long as you want it (Mine was about 6 ft long) and bind off!